There is a bit of a catch here though if you want to get these SIMs at such a low price. Both of them are only this cheap after cashback by redemption. That means a little bit of persistence, claiming your money back in instalments during the third, fifth, ninth and twelve month of your contract. So although the monthly payments may be a bit more expensive in the first instance, the savings in the long run are incredible.

So if you want to get your hands on what are, effectively the cheapest big data SIMO deals out there scroll down for all of the details. Or if you don't want the hassle of cashback, check out our best SIM only deals page for all the other options available.